Home / 2,787.56-3,845.40-1,856.24

Finding the Fourth Proportional to 2,787.56, 3,845.40 and 1,856.24

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Solution

The fourth proportional to 2,787.56, 3,845.40 and 1,856.24 is: 2,560.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.56 : 3,845.40 = 1,856.24 : x
  2. Step 2: Convert to fraction form
    2,787.56/3,845.40 = 1,856.24/x
  3. Step 3: Cross multiply
    2,787.56x = 3,845.40 × 1,856.24
  4. Step 4: Simplify right side
    2,787.56x = 7,137,985.30
  5. Step 5: Solve for x
    x = 7,137,985.30/2,787.56
  6. Step 6: Final answer
    x = 2,560.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.